Focusing properties of annular binary phase filters

被引:54
|
作者
de Juana, DM [1 ]
Canales, VF [1 ]
Valle, PJ [1 ]
Cagigal, MP [1 ]
机构
[1] Univ Cantabria, Dept Fis Aplicada, Santander 39005, Spain
关键词
apodization; superresolution;
D O I
10.1016/j.optcom.2003.10.040
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In this work, the focal behavior of optical systems with annular binary phase-only filters is theoretically investigated. Analytical expressions for the figures of merit that describe the three-dimensional light intensity distribution near the focus for this kind of filters are derived. These figures of merit are the basis for a novel procedure for designing annular binary filters with desired focal volume characteristics. As an example, we have applied this procedure to achieve superresolution in the transverse or in the axial direction. (C) 2003 Elsevier B.V. All rights reserved.
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页码:71 / 77
页数:7
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